21101430213999 has 24 divisors (see below), whose sum is σ = 30900964693040. Its totient is φ = 13873301350272.

The previous prime is 21101430213977. The next prime is 21101430214013. The reversal of 21101430213999 is 99931203410112.

21101430213999 is a `hidden beast` number, since 2 + 1 + 101 + 430 + 21 + 3 + 9 + 99 = 666.

It is not a de Polignac number, because 21101430213999 - 2¹⁷ = 21101430082927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101430213599) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3808212 + ... + 7530294.

Almost surely, 2^{21101430213999} is an apocalyptic number.

21101430213999 is a deficient number, since it is larger than the sum of its proper divisors (9799534479041).

21101430213999 is a wasteful number, since it uses less digits than its factorization.

21101430213999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730791 (or 3730788 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 21101430213999 in words is "twenty-one trillion, one hundred one billion, four hundred thirty million, two hundred thirteen thousand, nine hundred ninety-nine".